海南单招-表示星期的名词如何使用冠词

海南奥赛备考指南：

英语表示星期的名词有Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday，共七个，在通常情况下，它们前面不用冠词。如：

I require my new coat by Monday. 我的新上衣要在星期一以前做好。

Tuesday would suit me very well for a meeting. 星期二开会对我来说很合适。

The concert has been postponed to Wednesday. 音乐会已推迟到星期三举行。

I’ll set up a meeting for Thursday. 我星期四要组织召开一次会议。

Let’s shop on Friday. The supermarket will be very crowded on Saturday. 星期五去采购吧，星期六超市人太多了。

We had a visit from Richard on Sunday. 星期日理查德来拜访我们。

但是，若表示不确定的某一个星期几，则其前要用不定冠词。如：

My birthday is on a Friday this year. 今年我的生日是在星期五。

She usually works at home on a Thursday. 她星期四通常在家工作。

He never opens up shop on a Sunday. 星期日他的商店从不营业。

You won't catch me working on a Sunday! 你绝对见不到我在星期日工作!

The calendar shows that Christmas will fall on a Tuesday. 日历表明圣诞节是星期二。

Easter occurs on a Sunday in March or April. 复活节是3月或4月的一个星期天。

比较：

He left on Friday. 他是星期五离开的。

He left on a Friday. 他离开那天是星期五。

第一句on Friday，指大家心目中都知道的那个星期五；第二句用on a Friday，表明说话者只表明此事发生的那天是星期五，但到底是哪个星期五并不明确。

若需特指，则可在其前使用定冠词。如：

We had a card from her on the Friday after she got back. 在她回去后的那个星期五我们收到了她的明信片。